They are open minded for business they don't overspend their money.
They only buy what they need or what they could afford unlike most of us we would take a loan just to have what we want just to celebrate what we want.
They know how to control their money.
good words.
in other words, financial management is the most important thing if they want to become a successful businessman. many people who are just trying to learn business but they often forget important things like that. my personal opinion, controlling money is indeed very difficult especially when a desire is greater than its usefulness (I feel that I am not yet suitable in business).